Across
1
Value that does not change
3
Result of raising a number to an exponent
7
System of ordered marks for measuring
8
Lines that never intersect
11
Total distance around a shape
Down
2
Part of a line with two endpoints
4
Number that divides evenly into another
5
Math using letters for unknown values
6
Comparison of two quantities
9
Repeated addition
10
Three-sided polygon